强制关掉yum进程：
#rm -f /var/run/yum.pid
然后就可以使用yum了。
本文出自 “技术人生” 博客，请务必保留此出处http://jsship.blog.51cto.com/931397/1405370
yum提示another app is currently holding the yum lock;waiting for it to exit,布布扣,bubuko.com
yum提示another app is currently holding the yum lock;waiting for it to exit